Neutron diffraction investigation of hysteresis reduction and increase in linearity in the stress-strain response of superelastic NiTi

被引：24

作者：

Rathod, C. R. ^{[1
]}

Clausen, B.

Bourke, M. A. M.

Vaidyanathan, R.

机构：

[1] Univ Cent Florida, AMPAC, Orlando, FL 32816 USA

[2] Los Alamos Natl Lab, LANSCE, MST, Los Alamos, NM 87455 USA

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 20期

基金：

美国国家航空航天局; 美国国家科学基金会;

关键词：

D O I：

10.1063/1.2204650

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In situ neutron diffraction measurements during loading have been performed on plastically deformed superelastic NiTi samples. The measurements observed retained B19' phase in the unloaded state as a result of the plastic deformation in otherwise completely B2 phase samples. A reversible stress-induced B2-B19' transformation on application and removal of stress occurred in the presence of this retained B19' phase. The amount and orientation of this retained B19' phase changed with cycling. Such direct atomic scale observations in the bulk are used here for the first time to qualitatively elucidate the macroscopic stress-strain response in plastically deformed superelastic NiTi. (c) 2006 American Institute of Physics.

引用

页数：3

共 19 条

[1] Neutron diffraction measurement of stress-induced transformation in superelastic NiTi [J].